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5 Best Mass Gainers of 2025

Last Updated - 2025/09/22

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Optimum Nutrition

OPTIMUM NUTRITION Pro Complex Gainer, Double Chocolate 10.16 lbs.

Optimum Nutrition

CA$224.99

More Details
Main highlights
- Mixes Effortlessly with a Blender, Shaker, or Spoon
- High Protein to Carb Ratio
- 7 Superior Proteins Including Whey, Casein, and Egg
CA$224.99
2

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Dymatize

Dymatize Super Mass Gainer Powder | High Protein & Carb Blend Weight Gainer | 52g Protein, 1280 Calories, 245g Carbohydrates | 16 Servings, 12LB (Rich Chocolate)

Dymatize

CA$134.74

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Main highlights
- Smooth Texture and Easy Mixing: Blends well with water, milk, or your favorite shake: Mixes into a rich, creamy consistency without clumps or grit, making it easy to enjoy anytime during the day.
- High Calorie Formula: 1280 calories per serving with a balanced mix of protein and carbohydrates: Designed for those looking to increase overall intake in a simple and structured way, this calorie-dense mass gainer helps support demanding routines or busy schedules.
- Convenient and Versatile: Great for shakes, smoothies, or calorie-dense recipes: Whether at home or on the go, this mass gainer powder fits seamlessly into your nutrition plan without complicated prep or cleanup.
- 52g Protein per Serving: Blend of fast and slow digesting protein sources: Features whey, casein, and egg protein to deliver a high-quality mix that fits into your daily routine whether used post workout or between meals.
- 245g+ Carbohydrates: Easy way to boost total energy and calorie intake: Packed with over 245 grams of carbs from multiple sources, this formula offers a convenient option for those with high energy demands or a need for extra fuel.
CA$134.74
3

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

MAMMOTH

MAMMOTH MASS: Weight Gainer, High Calorie Protein Powder Workout Smoothie Shake, Meal Replacement, Low Sugar, Whey Isolate Concentrate, Casein Protein Blend, Weight Training, High Protein 15 lb, Vanilla

MAMMOTH

CA$109.99

More Details
Main highlights
- REVOLUTIONARY MASS GAINER FORMULA: Mammoth Mass contains 60 grams of High Quality Protein compromised of whey protein concentrate, whey protein isolate & miscellar casein. There is over 39 grams of combined BCAA Glutamine and Essential Amino Acids Clean Carb Complex features.
- QUALITY NUTRITION: Putting on size requires a balance of heavy training and quality nutrition. Because everyone’s a little different, some have a harder time packing on muscle than others. Mammoth Mass is a high-protein powdered mix delivering significant amount of supplemental protein, carbs, vitamins and minerals to build on the amount you're getting from a balanced diet of food.
- PROTEIN SHAKES AND RECIPES: Mammoth mass weight gainer protein is versatile in making protein shakes, smoothies and recipes. Boost calories and nutrition by adding to protein bars, cookies and other recipes.
- MUSCLE MASS FORMULA: MAMMOTH MASS Weight Gainer provides more protein, better carbs and far less sugar giving you more of what you want in a potent mass muscle building formula. With 60 grams of the finest whey protein isolate, whey protein concentrate, micellar casein and calcium caseinate available.
- CALORIES: To gain just one extra pound, you need to consume approximately 3,500 calories-above and beyond what you normally consume through foods, beverages, and supplements. Pro Gainer provides over 1250 calories per serving. By adding just one serving to your daily routine, you can begin to experience an increase in lean mass within the first week.
CA$109.99
4

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Sunshine Biopharma

Extreme Mass weight gainer muscle builder, 10 lb (4.54 kg) with less sugar for intense workout training made of high calorie fortified whey protein (Chocolate)

Sunshine Biopharma

CA$86.95

More Details
Main highlights
- Supports Lean Muscle Growth & Strength Gains; The high-protein formula provides essential amino acids to increase muscle size and strength while keeping fat gain in check.
- Optimal Nutrition for Performance & Recovery; A precise blend of whey protein, fast-digesting carbs, and essential micronutrients fuels workouts, prevents deficiencies, and sustains peak athletic performance.
- High-Calorie, Muscle-Building Formula; Delivers a massive 1,582 calories per serving, fortified with 60 g of protein, BCAAs, creatine, and essential vitamins to support intense training and consistent muscle gains.
- Enhances Glycogen Replenishment & Nitrogen Retention; The balanced macronutrient profile helps restore muscle energy stores post-workout, ensuring continuous growth and endurance.
- Accelerates Recovery & Reduces Muscle Breakdown; BCAAs, creatine, and glutamine promote rapid muscle repair and minimize post-workout soreness, ensuring you’re ready for your next training session.
CA$86.95
5
Best Value
20% Off

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

ALLMAX Nutrition
20% Off

ALLMAX Nutrition - QUICKMASS - Weight Gainer & Rapid Gain Catalyst, Chocolate, 10 Pound, 10 Lb

ALLMAX Nutrition

CA$79.99

CA$99.99
(20% Off)

More Details
Main highlights
- RESEARCH-PROVEN RESULTS: Clinically studied to significantly boost fat-free mass and chest size within 8 weeks, ideal for serious athletes and fitness enthusiasts looking to maximize muscle gains.
- RAPID MASS BUILDING FORMULA: Delivers 1010 calories and 64 grams of sustained-release protein per serving, scientifically engineered to help quickly increase lean muscle mass.
- PREMIUM CLEAN-CARB BLEND: Features a specialized blend of slow-release carbohydrates including sweet potato, oats, quinoa, and soluble corn fiber, ensuring consistent energy without sugar crashes.
- FORTIFIED WITH VITAMINS & MINERALS: Contains 20 essential vitamins and minerals, providing comprehensive nutritional support for enhanced muscle growth and recovery.
- EASY-TO-MIX & DELICIOUS: QuickMass is perfectly formulated to mix effortlessly with water, delivering a creamy, delicious shake without the need for milk.
CA$79.99
CA$99.99 (20% Off)

5 Best Mass Gainers of 2025

OPTIMUM NUTRITION Pro Complex Gainer, Double Chocolate 10.16 lbs.

Dymatize Super Mass Gainer Powder | High Protein & Carb Blend Weight Gainer | 52g Protein, 1280 Calories, 245g Carbohydrates | 16 Servings, 12LB (Rich Chocolate)

MAMMOTH MASS: Weight Gainer, High Calorie Protein Powder Workout Smoothie Shake, Meal Replacement, Low Sugar, Whey Isolate Concentrate, Casein Protein Blend, Weight Training, High Protein 15 lb, Vanilla

Extreme Mass weight gainer muscle builder, 10 lb (4.54 kg) with less sugar for intense workout training made of high calorie fortified whey protein (Chocolate)

ALLMAX Nutrition - QUICKMASS - Weight Gainer & Rapid Gain Catalyst, Chocolate, 10 Pound, 10 Lb

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MUTANT MASS Weight Gainer Protein Powder with a Whey Isolate, Concentrate, and Casein Protein Blend, High-Calorie Shake, 2.27 kg – Triple Chocolate